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EFFECT OF ENVIRONMENTAL CONDITIONS ON FATTY ACID COMPOSITION OF THE RED ALGA PORPHYRIDIUM CRUENTUM : CORRELATION TO GROWTH RATE 1
Author(s) -
Cohen Zvi,
Vonshak Avigad,
Richmond Amos
Publication year - 1988
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.1988.tb04474.x
Subject(s) - eicosapentaenoic acid , biology , polyunsaturated fatty acid , salinity , arachidonic acid , food science , fatty acid , light intensity , biochemistry , temperature salinity diagrams , composition (language) , botany , enzyme , ecology , linguistics , philosophy , physics , optics
The lipid and fatty acid composition of Porphyridium cruentum was determined as a function of light intensity, temperature, pH, and salinity. In cultures cultivated at the optimal temperature under non‐limiting light conditions, eicosapentaenoic acid was the main polyunsaturated fatty acid. When growth rate was reduced by decreased light intensity, increased cell concentration, suboptimal temperature, suboptimal pH, or increased salinity, the content of eicosapentaenoic acid decreased and that of arachidonic acid increased, the latter becoming the major polyunsaturated fatty acid.